Triethylamine → HCID 86666516, compound

Participants

Reaction Conditions

Reaction Steps

Triethylamine (220 μL, 1.6 mmol) and then methanesulfonyl chloride (82 μL, 1.1 mmol) were added to a solution of tert-butyl 4-{[4-(hydroxymethyl)-6-(trifluoromethyl)pyridin-2-yl]oxy}piperidine-1-carboxylate (0.20 g, 0.53 mmol, from Step 2) in methylene chloride (2 mL) at 0° C. After stirring at this temperature for 30 minutes, the reaction mixture was partitioned between water and EtOAc. The organic layer was washed with brine, dried over sodium sulfate, filtered and concentrated. The crude mesylate intermediate was dissolved in N,N-dimethylformamide (2.0 mL), and oxazolidin-2-one (230 mg, 2.6 mmol) was added. The mixture was cooled to 0° C. and sodium hydride (53 mg, 1.3 mmol, 60% in mineral oil) was added. The reaction was warmed to room temperature and stirred for 40 minutes, then was quenched with water, and extracted with EtOAc. The organic extract was washed with water, brine, dried over sodium sulfate, filtered and concentrated. Flash chromatography, eluting with a gradient from 0-70% EtOAc in hexanes afforded product (95 mg, 40%). 1H NMR (400 MHz, CDCl3) δ 7.14 (s, 1H), 6.79 (s, 1H), 5.27 (tt, J=7.7, 4.1 Hz, 1H), 4.44 (s, 2H), 4.44-4.38 (m, 2H), 3.80-3.68 (m, 2H), 3.58-3.47 (m, 2H), 3.31 (ddd, J=13.6, 8.5, 3.6 Hz, 2H), 1.99 (ddt, J=13.2, 6.3, 3.0 Hz, 2H), 1.78-1.67 (m, 2H), 1.47 (s, 9H); 19F NMR (376 MHz, CDCl3) 5-68.89 (s); LCMS (M+Na)+: 468.0.

Provenance & Evidence